After finishing the night up giving each other some much needed oral attention we both decided we were tired and got ready for bed. There was no doubt about sleeping arrangements. I had a queen-sized bed, so there was plenty of room for the both of us. After cleaning up a bit we made our way to the bedroom. I was very used to sleeping naked so I just stripped down. Mitch did the same. We climbed into bed, and I killed the light. It's a testament to how tired we both were that nothing happened at that point. We both just went soundly to sleep.

The next morning I woke up first. I needed to piss pretty badly so I got up and headed to the bathroom. After relieving myself I returned to the bedroom intending to go back to sleep. However, when I looked at the bed I saw that Mitch had sprawled out a bit in my absence and kicked the covers off. He was lying on his stomach, and his bare ass was visible. I immediately got both a hardon and an idea. I quietly walked over to the bed and reached into my nightstand. I pulled out a bottle of lube that I kept there for my personal use. As slowly and quietly as I could I climbed on the bed. Mitch's legs were together so I very slowly lowered myself over him straddling his legs. After I got in position I waited a minute to make sure he stayed asleep. When I was ready I thoroughly lubed up my throbbing cock. Once it was good a slick I leaned forward and pressed the head up against his asshole. I was very surprised that he didn't wake up at this point. Encouraged, I started to push in a bit more. As soon as I felt my head start to slip in I pushed a little harder and steadily shoved my whole cock into his ass. When I got a little more than half way in he grunted, stirred and then promptly woke up. As I bottomed out in his ass he moaned out in pleasure.

"Oh god man. That feels fucking awesome! Push it in as far as you can!"

"Shit man. Your ass is so tight. I could fuck you for days," I replied.

"It's all yours man. You can fuck my ass night and day. Your cock feels incredible."

That's all the encouragement I needed. Mitch adjusted himself so he was sitting up a little more on his knees. I grabbed onto his hips and started taking long, slow strokes. I tried to get myself as far into him as I could. Each time I bottomed out he moaned out. His ass was so tight. I started to speed up the hornier I got. As I was really getting into it he started squeezing his asshole just a little with each stroke. The effect was that he was essentially milking my cock as it slid in and out. That feeling was simply spectacular. It only took a few more strokes after that before I felt my load welling up in my balls.

"Oh damn. I'm gonna cum man. It feels like a big one too!" I said.

"Cum on. Do it! Fill me up. I want to feel your cum in my ass," he replied.

"Oh, Oh! Here it comes. Can't… hold.. back… any… longer… UGH!"

Just then I erupted like a geyser into his ass. He continued to milk my cock with his ass as my cock spasmed on. As the last of my cum came out I collapsed across his back.

"Holy shit man," I panted. "That was so good."

"You're telling me! I haven't been fucked in the ass since that time you were getting ready to leave for school. I missed that!" he replied.

I slowly pulled my cock out then fell over to the side lying on the bed. Mitch got up and ran to the bathroom to clean himself up a little. I lay there contemplating how great this weekend was turning out when I heard the shower water start up. I figured Mitch might want some company so I got up and made my way to the bathroom.

"Want some company in there man?" I asked.

"Always! Come on in!" he enthusiastically replied.

I pulled the curtain aside and stepped into the shower with him. The apartment had a tub shower combo that was nice and long so it easily fit the two of us. We chatted while washing ourselves for a few minutes. As Mitch took the soap and began to wash his cock and balls I stopped him and took the soap.

"Here, let me take care of that for you," I said.

"Whatever you like man," he replied.

I got a good lather up and slowly started stroking his cock. His hardness always felt so good in my hands. He closed his eyes just enjoying the sensation. The water began to wash the soap off, but it didn't matter. He was so horny he was flowing pre-cum. His cock stayed nice and slick. While he stood there with his eyes closed I turned around, never releasing his cock. As I continued to stroke him I bent over and backed up. Just as I placed the tip of his cock against my asshole he opened his eyes, and saw what I was doing. He placed his hands on my hips and began to thrust forward. In one eager thrust his entire 7'' cock slipped past my anus and buried itself in my ass. We both moaned out simultaneously. It felt like absolute heaven having his cock buried inside me once again. Each thrust felt better and better. I was getting very hard just from having him fuck me. Taking a note from our session from a few moments ago I began to slightly squeeze his cock with my asshole.

"Oh damn. That's fucking great! Don't stop that, please!" he begged.

"Just as long as you don't stop fucking me. Your cock is amazing," I moaned in reply.

The pleasure was almost unbearable. My cock was almost painfully hard. As he picked up the pace I began to furiously stroke myself as well. I could feel my orgasm rapidly approaching. All of a sudden I felt Mitch tighten up and ram his cock hard into my ass as he moaned out loud. Just as I felt a torrent of cum flood my bowels, an almost overwhelming orgasm ripped through me and I blasted the shower wall with my own cum. As our orgasms subsided we remained locked together just relishing the feeling after. Eventually we separated and finished our shower. We made our way back to my room. Just as we got there I heard a knock at the door.

"You go ahead and get dressed," I told Mitch. "I'll go see who it is," I said as I threw on a bathrobe.

"OK man, I'll be out in a minute. Thanks again for the wonderful wake up and terrific shower!" he replied.

"Oh, believe me. It was my pleasure."

I went out to the living room wondering who it could be. I checked through the peephole, and was surprised to see my sister Kasey standing outside. I was surprised, but pleasantly so. I opened the door to greet her.

"Hey Kasey. This is a pleasant surprise," I said.

"Glad to hear it. Are you going to invite me in, or just leave me standing out here?" she replied.

"Sorry, sorry. Come on in. So, what brings you all the way up here?" I asked.

"Oh, I was visiting a friend up here last night, and I figured I'd drop in. Seeing as how you appear to be dressed in nothing but a bathrobe I'd say my timing was pretty good," she replied with a smirk.

With that Kasey stepped forward, grabbing the belt on my bathrobe and pulled herself up against me giving me a deep, passionate kiss. Let me take this moment to say that over the 5 years since that amazing week in high school Kasey had matured beautfully. She had grown a little taller. Her curves were still as flawless as ever, but she had that sexy more grown up look about her. Her soft, full lips felt amazing pressed to my mouth. Her tongue worked expertly with mine, only hinting at the things she could do with that. She tugged my robe open and reached down to grab my slowly stiffening cock. As she gripped the shaft in her hand a jolt shot up my member, and I jumped back.

"Woah, shit" I exclaimed.

"What's wrong? Did I hurt you or something?" she asked.

"No, not really. I'm just still a little sensative for a bit I guess."

"Did you just finish jacking off or something?"

"Not exactly. See…"

"See, he and I just got done fucking, and he's already cum twice this morning. That's whats up," Mitch said as he stepped into the room. "Hey there gorgeous. Been a while."

"Now isn't this a nice little surprise. My two favorite men here. I'm guessing your roommates are gone Pete?" she said.

"Yep, they're all gone until Monday afternoon or so," I replied.

"So what you're telling me," she responded, "is that we have the place to ourselves, and we could have a VERY…GOOD…TIME this weekend. Is that right?"

"You know it!" Mitch answered for me.

"Well I don't have much in the way of clothes with me for staying all weekend, but then again I suppose I won't really need them," she said with a grin. "Seeing as how you both are probably a little taxed from this morning, why don't we go grab some breakfast so you can get your strength back. I'm going to expect a lot out of such experienced gentlemen as you both."

"I like the sound of that," I replied.

"Me too!" exclaimed Mitch.

I went back to the bedroom and got dressed quickly. When I came out we all headed out to a small diner on campus and had breakfast. We all chatted about typical things. Kasey talked about her life back home. She had apparently been seeing another girl for awhile. She assured us that it wasn't a big deal as the two of them had a very open relationship. She showed us a picture of a stunning red head wearing nothing but a fedora and a smile sprawled out on a bed. I couldn't believe how gorgeous that girl was. Kasey told us that the girl's name was Sandra, and that she had an almost insatiable appetite for sex. Just the thought of the fiery goddess and my beautiful sister locked together in lesbian passion had my cock standing straight up. I could tell that Mitch was in a similar situation. I had a feeling Kasey was going to get everything she was looking for this weekend and more. After eating and talking for about an hour it was time to head out. We left the restaurant, and before heading back to the apartment we walked around campus so I could show them various buildings and sites. Kasey bought herself a hoodie from the bookstore, and Mitch promptly scoffed at it seeing as our two schools were rivals. Eventually I think the tension got to be too much, and we all decided at once it was time to head back.

When we got back to the car Kasey and Mitch quickly climbed into the backseat while I got behind the wheel.

"So, I'm the chauffeur while you guys get to have some fun huh?" I asked.

"Don't worry bro. You'll get your turn," Kasey said as she leaned up and kissed me.

The trip back wasn't long, but it didn't take them long either. We hadn't even left the parking lot before Kasey was on her knees on the bench seat leaned over Mitch's lap hungrily sucking his cock. Mitch, for his part, wasn't neglecting her. He had two fingers in her raised up pussy. The sounds of their fun had me incredibly horny. I wanted to get home as quickly as possible. As I pulled into the apartment complex Kasey's slurping was picking up pace, and Mitch's moans were getting a little more frenetic. Just as I pulled into my space Mitch cried out. 

"Oh god! I'm cumming. Swallow it all!" 

"Well, we're here," I said as Kasey sat up wiping the little bit of cum she had on her lips into her mouth.

"Good. You know how much sucking dick affects me. I need a good fucking real bad, and bro it's your cock that's going to give it to me!" she replied.

As soon as we got through the door we began tearing each other's clothes off furiously. Once we were completely naked we pressed our bodies together as tightly as possible while sharing a very passionate kiss. We didn't even try to make it to the bedroom. Kasey broke apart from me and just laid down right on the carpet in the middle of the living room floor.

"God, Pete. I need your cock inside me right now," she said as she looked up at me. "Get down here and fuck your little sister like she needs it."

"Fuck that's hot!" Pete said from behind me.

Not one to disappoint a lady I immediately got down between Kasey's legs. I lined my cock up with her pussy, then I grabbed her hips and shoved it in with as much force as I could. She was incredibly wet, and my cock shot right it all the way with no trouble. She gasped with pleasure and excitement. There was a passionate fire in her eyes that could have melted stone. She wrapped her arms around my neck and pulled me down to her as she locked her ankles behind my back. We kissed again, and then she broke it and said, "Fuck me hard Pete. I need this so bad. Abuse my pussy with your cock. I want to feel it pounding into me over and over again!"

"I'm going to fuck you harder than you've ever been fucked before Kasey. When I'm through with you, you won't want to ever fuck anyone but your big brother again!"

At this point Mitch had stripped down naked too and was standing off to the side furiously stroking himself.

"Damn, I can't believe how hot you to are. Go on Pete! Give it to your sister hard like she wants it. Fuck that pussy like it's the last one on Earth!"

After that, pure animal instinct took over. I drove my cock over and over again into my sister as hard and as fast as I could. The sound of our flesh smacking together along with our moans and grunts permeated the apartment. There was no talking anymore, just the primal sounds of intense passion. Our bodies began to glisten with sweat. I was mesmerized by watching Kasey's beautifully large, full tits bouncing with each thrust. I moved one of my hands to her breast needing to feel the soft, supple flesh as a contrast to the hard, forceful fucking. As I squeezed her breast she began to tense up. She gritted her teeth and squeezed her eyes shut trying to hold back what was obviously a very intense orgasm coming on. I knew I was close too. I could feel the tingle in my balls that always preceded an orgasm of my own. I wanted to make sure we came together. Just when I thought I couldn't hold back anymore Mitch stepped forward up to us.

"Oh god! I can't hold back," he said as he pointed his raging cock right at us.

His cock erupted, showering us both. Cum splattered across my shoulders and chest as it rained down on Kasey's breasts and face. The site and feeling was so erotic that it put us both over the edge. Kasey's eyes rolled back in her head, and she began to jerk and spasm uncontrollably as the orgasm tore through every fiber of her body. When her pussy clamped down on my cock like a vice I yelled out with the almost unbearable pleasure and exploded into her. It was like I hadn't had a release in years as opposed to earlier that day. Cum flooded out of my cock and into her pussy. I continued to thrust. I couldn't stop. Cum began to squirt out around the sides of my cock, but it kept coming. When I finally finished, I opened my eyes to see my sister lying beneath me gasping and covered in my best friend's cum. It was about the most erotic site I'd ever seen.

After that intense session of fucking we all decided to take a break and relax for a bit. After all it was only Saturday morning, and we had until Monday morning all to ourselves. After getting cleaned up we all met back out in the living room. Unsurprisingly we all remained naked. I suppose it really was like that week in high school where this all started. We just figured why bother getting dressed. As we sat on the couch to watch a bit of TV for a bit I sat on one end of the couch, and Kasey snuggled up next to Mitch on the other. I probably should have been a little jealous, but I wasn't at all. I knew that the three of us shared a special relationship, and that Mitch cared for Kasey almost as much as I did. After a while, we broke for lunch, and just ate some sandwiches. The afternoon was pretty relaxed, but not uneventful. There was no serious fucking, but periodically someone would get the urge to do something with someone. It was mostly oral and manual. Kasey would suck my cock for a while. I would stroke Mitch's for a while. He'd eat Kasey's pussy. It just sort of went about like that. We were definitely a bit more relaxed about things since we'd grown up a bit. Eventually it was time for dinner, and we ordered a pizza. When the knock came I went to get my money.

"Shit! I don't have enough for a tip," I said. "Do either of you have any cash?"

"Sorry man," Mitch replied. "I spent my cash last night, and haven't had a chance to get anymore."

"Me neither," Kasey said. "I don't usually carry much cash. However, I've got an idea. Let me handle this."

Kasey took the money for the pizza and walked over to the door, still completely naked. She opened the door, and the delivery guy's jaw hit the floor. Kasey, took the pizza and set it on a small table we had by the door, and handed him the cash.

"Sorry, I don't have enough for a tip for you," she said sweetly.

"Th..That's ok," replied the guy as he eyed her up and down.

"No, it's really not. Let me make it up to you," she said.

With that she leaned forward and pulled the guy into a deep kiss as she pressed her huge breasts up against him. As the kiss went on I saw her hand slide down to his crotch. She massaged his cock in his pants then slowly lowered his zipper. I watched, shocked, as she lowered herself to her knees. She pulled out his cock, which was a good 6 and a half inches long and fairly thick, and took him deep into her mouth. She sucked his cock right there on the threshold with no shame at all. He was so engrossed in it, that he didn't even notice Mitch and I sitting in the living room. As good as she is, it certainly didn't take him long to finish.

"Fuck! I'm about to cum," he said after only a couple of minutes.

Kasey increased her pace until he tensed up, grabbing the door frame and grunted out. Kasey swallowed everything he gave her. When he finished she slid his cock from her mouth and made sure to lick it clean. As she stood up, he tucked it away.

"Well, I hope that was an adequate substitute for a tip," she said.

"Hell yeah. That was awesome," he said.

I could tell he thought he might get more than that. He had a sly grin on his face. Well, I wasn't willing to share Kasey with anyone else but Mitch. I decided it was time to get his attention, so I coughed lightly. He looked up and saw Mitch and I sitting naked on the couch in the living room, and his face blanched.

"Nice work man," I said.

"Yeah, good showing bud," followed Pete. "I hope you enjoyed the tip."

Obviously embarrassed he quickly ran away.

"Aww. You guys embarrassed him," Kasey said with a grin.

"He was getting a little to cocky, no pun intended," I replied. "Besides I think we've got enough going on here."

"I agree," said Mitch. "And now, you got me good and horny. How's about you let me get a shot at that pussy now!"

"You read my mind," replied Kasey.

She immediately got on the floor with her legs spread in eager anticipation. Mitch didn't need anymore encouragement and got down on the floor with her. He quickly drove his large, hard cock into her. The site of my best friend fucking my sister had me incredibly turned on. I slowly stroked my cock while watching them enjoy their passion. Eventually I got down on the floor with them. I knelt next to Kasey, and she took my cock in her hand. She stroked my cock in rhythm with each thrust Mitch gave her. It became obvious she was going to cum long before Mitch. As she peaked and her body began to shudder I got an idea. As her orgasm wound down, and knowing Mitch still needed to get off I said, "Move over. Let me finish him." Mitch quickly took his cock out of her pussy, and I leaned forward on my knees and took it deep into my mouth. It was amazing. I could taste Kaseys sweet juice all over his cock, but it was mixed with his more manly flavor. The taste was intoxicating. I couldn't get enough. Mitch put his hands on my head as I took his whole cock down my throat. He lost himself and began fuck my mouth and throat. At the same time Kasey continued to stroke my cock wonderfully. I could feel Mitch's body begin to tense up, so I pulled all but the head out of my mouth and began stroke him quickly while circling the tip with my tongue. He arched his back and flooded my mouth with cum. I swallowed all that he gave me, and the sensation put me past the breaking point and my cock exploded in Kaseys hand, splattering cum all over the carpet.

"Woah. That was awesome," Mitch said.

"Yeah, it was," I replied. "Now that we've worked up an appetite let's eat!"